How to use 30Mhz clock on SPI SCK.

[hariprasad]

Posted on July 08, 2015 at 08:14

I'm using stm32f429. I have configured my system core clock to 160Mhz and I use the APB2 clock divider as 4, which gives me 40Mhz to my SPI4 peripheral ,

I want to use my SPI peripheral at 30Mhz, since the SPI core clock is 40 when I divide it using the prescalars the frequency's that i'll get 40,20,10,.... I can't change the core clock from160Mhz and the SPI peripheral. So is there any way to set 30Mhz on my SPI4 without changing core clock and APB2 clock divider value. #clock #spi #!stm32f4-disco